JPH0434313A - Recorder - Google Patents

Abstract

PURPOSE:To eliminate inconvenience attributed to the use of a recording pen and a circular chart for drawing a circular arc by providing recording position data as X and Y coordinate data. CONSTITUTION:An X arm 4 and a Y arm 5 are arranged on a circular chart 3. A carriage 7 with a recording head containing a plurality of recording elements 6 mounted thereon is mounted on the arm 5 in a slidable manner. A plurality of analog input signals applied to an input terminal 10 are applied to a recording position computing circuit 12 through a measuring circuit 11. This circuit 12 has a time signal applied from an input terminal 13 to compute a recording position on the circular chart 3. The results of computing the recording position are applied to a recording control circuit 14. Controlled by the circuit 14, the carriage 7 is stopped at a rest position other than recording areas of the chart 3 during a non-recording period and the carriage 7 is moved to a recording position at a focus computed with the circuit 12 during a recording period while the elements 6 are driven selectively according to a measuring channel to record.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Field of Application> The present invention relates to a recorder, and specifically relates to an improvement in a recording mechanism.

BACKGROUND OF THE INVENTION One type of recorder is configured to record the magnitude of an analog input signal along the radial direction of a circular chart with a time scale along the circumference.

FIG. 8 is a configuration explanatory diagram showing an example of such a conventional recorder. In the device shown in Fig. 8, four benz P1 to P4, each having the length of the arm, are arranged so that their fulcrum points coincide with each other. A time scale 2 is provided. This time scale 2 is provided so as to correspond to the locus of Ben P1, which has the shortest arm among the four Bens P1 to P4.

In such a configuration, the circular chart 1 is rotated at a set speed in a wide range from 1 hour to over 4000 hours per revolution. On the other hand, each ben P1 to P4 is connected to the circular chart 1 according to the magnitude of each analog input signal.
, and records the magnitude of the analog input signal on the circular chart 1.

According to the recorder configured in this way, since the entire recorded result is always displayed on the circular chart 1, there is an advantage that the state of change in the analog input signal over a long period of time can be grasped at a glance, and it is easy to compare. It is widely used in various fields as a means of recording measurement results with gradual fluctuations.

<Problems to be Solved by the Invention> However, such conventional recorders have the following problems.

■As the number of recording pens increases, the number of driving elements increases.
The number of parts also increases, making it difficult to downsize.

■When setting up multiple recording pens, the length of the arm of each recording pen must be made different to ensure a gap between the recording pens. As a result, the radius of the arc trajectory recorded by each recording pen is depends on the arm, and it is impossible to synchronize the time (phase) of the recorded results on the chart. For this reason, it is difficult to perform signal analysis based on a plurality of recording results while taking into account the time relationships between them.

■When replacing the circular chart, each recording pen must be lifted up from the circular chart and moved to a position out of the way, which takes a considerable amount of time.

■Since the recording pen records in an arc, the scale along the arc is not linear.

■A mechanism is required to rotate the circular chart.

■When reading the recording trajectory, multiple recording pens are always positioned on the circular chart, which may get in the way.

Even if the rotation speed of the circular chart is increased in order to improve the 0-time resolution, only one revolution can be recorded, which limits the recording time.

The present invention has focused on these points, and its purpose is to provide a recorder that solves the inconveniences caused by a recording pen that writes in an arc and the inconveniences caused by using a circular chart.

Means for Solving the Problems> The recorder of the present invention comprises: a chart; a carriage moving means for moving a carriage to which a recording head is attached in at least the X direction or the Y direction on the chart; and at least the magnitude of an analog input signal. a recording position calculating means for calculating a recording position l on the chart based on the recording position l on the chart; and a recording position calculation means that stops the carriage at a rest position outside the recording area of the chart when not recording, and moves the carriage to a predetermined recording position calculated by the recording position calculation means when recording. The present invention is characterized in that it includes a recording control means that moves the recording head to a certain position and selectively drives the recording head to perform recording.

<Function> The carry/judge to which the recording head is attached is at rest outside the recording area of the chart when not recording, and when recording, the carry/judge moving mechanism is moved according to the recording position calculation result based on at least the magnitude of the analog input signal. can be selectively moved to a recording position on the chart. The recording head is selectively driven to record on the chart when the carriage reaches a predetermined recording position.

<Example> Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a configuration diagram showing an embodiment of the present invention. A circular chart 3 is mounted on a flat chart bed that does not rotate. A shaft arm 5 is arranged. A Y-axis arm 5 is slidably attached to the X-axis arm 4, and a carriage 7 is attached to the Y-axis arm 5 to which a recording head including a plurality of recording elements 6 such as recording pens that can be raised and lowered is attached. Slidably mounted. The Y-axis arm 5 is moved in the X-axis direction by an X-axis drive mechanism 8, and the carriage 7 is moved in the Y-axis direction by a Y-axis drive mechanism 9. A plurality of analog input signals applied to the input terminal 10 are sent to the recording position calculation circuit 12 via a measurement circuit 11 provided with an A/D converter for each measurement channel, for example.
added to. A time signal is also applied to this recording position calculation circuit 12 from an input terminal 13, and the recording position on the circular chart 3 is calculated based on the magnitude of the time signal and the analog input signal. The calculation result of the recording position is applied to the recording control circuit 14. This recording control circuit 14 stops the carriage 7 at a rest position outside the recording area of the circular chart 3 during non-recording, and moves the carriage 7 for recording position calculation times I! during recording. The recording element 6 of the recording head is controlled to be moved to the predetermined recording position calculated in step @12, and to selectively drive the recording element 6 of the recording head according to the measurement channel to perform recording.

FIG. 2 is an external view showing the specific example of FIG. 1, and the same parts as in FIG. 1 are given the same reference numerals. Reference numeral 15 denotes a motor constituting the X-axis drive mechanism 8, which causes the Y-axis arm 5 to reciprocate along the X-axis arm 4. Reference numeral 16 denotes a motor constituting the Y-axis drive mechanism 9, which reciprocates the carriage 7 along the Y-axis arm 5.

The operation of the device configured in this way will be explained.

Here, for example, the maximum radius of circular chart 3 is 100 mm.
The recording resolution is set to 0.1 mm, and each analog input signal is sampled every 100 m5, and measurement data for the past 30 minutes is intermittently recorded every 30 minutes on a circular chart 3 that rotates once every 24 hours. . Under these conditions, the total length of the circumference of the circular chart 3 at its maximum radius is approximately 6
Since it is 30mm, the resolution is approximately 6300.
step and record measurement data for about 30 minutes.
Perform with 0 steps. In this case, the number of measurement data per step is nearly 140.

The recording position calculation circuit 12 temporarily stores measurement data of the analog input signal applied from the measurement circuit 11 together with time data in an internal memory. Then, for each step, the maximum value, minimum value, average value, etc. are determined from the nearly 140 pieces of measurement data within the measurement period, and these values are marked with an X on the circular chart 3.

It is converted into recording position data expressed in Y coordinates and stored in internal memory. For example, when the maximum value/minimum value recording mode is set, the recording control circuit 14 records maximum value data and minimum value data as recording data for each step.
If the average value recording mode is set, average value data is outputted to the recording control circuit 14 as recording data for each step. In addition, when outputting these recorded data, in order to maintain continuity of the recording results, first output the last recorded data from the previous time, then output data according to the set recording mode, and The final recording data is stored as the next recording start data, and the recording position calculation circuit 12 can also output recording data for recording character symbol patterns as necessary.

The recording control circuit 14 thus moves the carriage 7 according to the recording data applied from the recording position calculation circuit 12 and controls the up-down of the recording element 6. FIG. 3 is an example of the trajectory of the recording element 6 when the maximum value/minimum value recording mode is set. To, T...
... represents the period recorded by one recording operation, and S
O% -1+so 'TL + S 11 +...
represents a recording step in the recording period. HP is a rest position of the carriage 7 when not recording, which is provided outside the recording area of the circular chart 3. The recording control circuit 14 outputs minimum value data and maximum value data to the X-axis drive mechanism 8 and Y-axis drive mechanism 9 as X and Y coordinate data on the circular chart 3 at each step. Step 5oi
At t-1, the minimum value data P and the maximum value data P2 of the measurement data after the previous step SO'FL-2 are input, and a line segment that connects them with a straight line is recorded, and step S is performed. 1
In L, the minimum value data P3 and maximum value data P4 of the measurement data after the previous step 501-1 are input, and a line segment that connects them with a straight line is recorded.
Maximum value data P2 recorded at -1 and step 5OTL
Also connect the minimum value data P3 recorded in the straight line. By recording the maximum value data P4 in step 5OIL, the recording of period T0 is completed, the recording element 6 is raised, and the carriage 7 returns to the body resting position IHP and waits for a recording command for the next period T.

After a predetermined period of time has elapsed, a recording command for period T is applied, causing the carriage 7 to perform step 5 again.
It is moved to the position of the OTL maximum value data P4, and recording from step S11 onwards is executed. In this way, by recording the maximum value P12 in step 5ITL, the recording of period T1 is completed, the recording element 6 is raised, and the carriage 7 returns to the rest position HP and waits for a recording command for the next period T2. . Thereafter, similar operations are repeated intermittently to complete recording equivalent to one rotation of a conventional circular chart.

Here, since the interval between recording steps on the circular chart 3 is set to be narrower than the recording width of the recording element 6, the recording result by the line segment connecting the maximum value data and minimum value data of adjacent steps is not practical. Can be ignored.

According to such a configuration, the following effects can be obtained.

■Since multiple recording elements are attached to a common carriage, the number of parts can be reduced compared to the conventional multiple recording pen type, allowing for miniaturization.

■Since the recording position data is given as X, Y coordinate data, there will be no phase difference between the recording results of multiple channels, and signal analysis can be performed based on the multiple recording results without being aware of the time relationship. It can be carried out.

■When replacing the circular chart, the carriage can be moved out of the recording area of the circular chart, making it easy to replace.

(2) Since the recording position data is given as X and Y coordinate data, there is no inconvenience caused by arc writing as in the past, and the scale becomes linear.

(2) Since the recording position data is given as X and Y coordinate data, there is no need for a tR for rotating the circular chart, which simplifies the structure.

(2) When reading the recording trajectory, since the carriage stops at a stop position outside the recording area of the circular chart when not recording, the entire recording trajectory can be read without being obstructed by the carriage or the like.

In Fig. 3, the carriage is moved from the minimum value to the maximum value at each step, and when moving to the next step, it is moved from the maximum value to the minimum value, but the carriage is moved from the maximum value to the minimum value at each step. If you want to move to the minimum value and move to the next step, you can move from the minimum value to the maximum value,
When moving to the next step, the step may be moved from the maximum value to the maximum value or from the minimum value to the minimum value.

In addition, in the above embodiment, an example is shown in which a plurality of recording elements are provided on the carriage, and the recording element corresponding to the measurement channel is selectively driven up and down to perform recording.
A storage section for a plurality of recording elements may be provided in a part of the recorder gauge, and the carriage may exchange the recording elements according to the measurement channel during recording. Multiple colors (multiple pens) can be achieved without increasing the size.

Furthermore, by incorporating an adjustment control calculation section into the recorder configured in this manner, it is possible to generate operation signals for the operation object and record the setting values and measurement values related to the operation object in multiple colors on the same time axis. can. FIG. 4 is a block diagram of a main part of an embodiment of a device incorporating an adjustment-side m calculation section. In FIG.
Setting data of the operation target (not shown) set by and measurement times F! Detects the deviation of the measured data output from III and calculates proportionality to the deviation.

Proportional integral calculation, ratio gAf! is subjected to adjustment control calculations such as integral and integral calculations and fuzzy calculations to generate operation signals for the operation objects and output them to each operation object. On the other hand, setting port H18
The setting data is applied together with the measurement data of the measurement circuit 11 to the recording position calculation circuit 12 via the multiplexer 19. This allows setting values and measured values to be displayed on the circular chart 3.
It is possible to record multiple colors on the same time axis.

Furthermore, it is also possible to incorporate a program signal generating section into the recorder configured in this way, and record set values and measured values in multiple colors on the same time axis. FIG. 5 is a block diagram of a main part of an embodiment of a device incorporating a program signal generator 20. In FIG. have. On the other hand, the output data of the program signal generator 20 is applied to the recording position calculation circuit 12 via the multiplexer 19 together with the measurement data of measurement #111. With this configuration, for example, prior to the start of control, the carriage is moved at high speed in advance according to the temperature profile according to the control program, and the temperature profile is recorded as shown in FIG.
Controlled temperature measurements can be recorded in different colors. According to this, setting errors can be prevented and the relationship between set values and measured values can be accurately grasped. Note that the set values and measured values may be recorded in a time-division manner.

Furthermore, as shown in FIG. 7, the upper and lower limit values of the settings may be recorded together with the temperature profile.

Thereby, it is possible to visually observe when the measured value exceeds these upper and lower @ values, and it is also possible to generate an alarm signal if necessary.

In addition, a plurality of positioning marks are provided on a part of the circular chart to set the relative position with respect to the print scale in the moving direction of the carriage, and a sensor is provided on the carriage to read these marks. By reading the marks, you can compensate for the time axis deviation when loading the circular chart! - It is also possible to calculate the recording position.

According to this, the loading position accuracy of the circular chart can be relaxed.

Also, since rotation of the circular chart is no longer necessary, a roll chart 2 as shown in FIG. 8 can be used as a circular chart 3.
1 with a circular chart pattern printed in advance may also be used. To position the roll chart 21, it is sufficient to provide positioning marks and notches on the roll chart 21, and to detect these marks and notches with the positioning sensor 22 provided on the recorder side. When the recording of is completed, roll chart 2
1 for one circular chart, and the conventional work of replacing circular charts can be greatly reduced. Note that the roll chart after recording may be rolled up or may be allowed to flow as shown by the two-dot chain line.

In addition, in Fig. 8, using a plain roll chart,
Recording may be performed after drawing a scale pattern as a circular chart. With this configuration, the positioning conditions for the roll chart can be relaxed.

By the way, when saving a recorded circular chart,
As shown in FIG. 9, the circular chart 3 is inserted into a rod 24 using the hole 23 at its center. When using the roll chart 21 as shown in FIG. 8, it is difficult to adapt to such a storage format.
This problem can be solved by providing perforations in advance on the outer periphery of the circular chart 3 so that the printed circular chart 3 can be easily separated.

FIG. 10 is an explanatory diagram of the configuration of another embodiment of the present invention, and the same parts as in FIG. 8 are given the same reference numerals. The embodiment shown in FIG. 10 is of the pen exchange type, and has an X-axis arm 4. A recording mechanism such as the Y-axis arm 5 is attached, and a pen storage section 26 is also attached. According to such a configuration, when the door 25 is open, the roll chart 21
Since the entire surface of the roll chart 21 is opened, it becomes easier to load the roll chart 21, and also to perform maintenance work on the internal device and operation of the operation panel 27. Such a configuration is also effective when using a conventional circular chart.

By the way, in the above embodiment, an example was explained in which a circular chart with a time scale written along the circumferential direction was used as the chart 3. Even if the speed is increased, only one revolution can be recorded, which limits the recording time.

This problem can be solved by using a plurality of time scales 28 at regular intervals along the feeding direction, as shown in FIG. 11 as chart 3.
This can be solved by using a strip chart provided with

In this case, the ms for moving the carriage 7 can be used as is for the apparatus using a circular chart. and,
As a recording position calculation circuit, for example, as shown in FIG. 12, a certain section T is used along the time axis direction of the strip chart. , T7. When calculating the starting point and ending point for each time and recording the line segment linearly between the two points, use one that calculates the recording position on the strip chart based on the magnitude of the time signal and analog input signal. . In Fig. 12, when recording the line segment of section rm'ro, the starting point position is PO
The respective X and Y coordinate positions are calculated by setting the end point position to P. Then, with the recording element raised relative to the chart, the carriage is moved from the rest value fiHP to the starting point PO to town the recording element, and the ending point W
Move the carriage to P1. As a result, a straight line is recorded on the chart from the starting point position P0 to the ending point position P1. After the carriage is moved to the end point positions p, t, the recording element is raised again and the carriage is moved to the paper feed position HP. Similarly, section T.

The line segment recording of section T2 is performed with the starting point position Pl and the ending point position P2, and the line segment recording of section T2 is performed with the starting point position P2 and the ending point position P3.

Recording on a strip chart can also be performed while moving the chart along the time axis direction according to a predetermined time resolution. In this case, the carriage may be moved in the amplitude direction perpendicular to the chart feeding direction based on the magnitude of the analog input signal, and the calculation of the landmark W based on the time signal can be omitted. The recording form at this time may be line segment recording or dot recording.

As shown in FIG. 13, the recording position 3F calculation circuit 12 includes a first calculation circuit 29 that calculates the recording position on the circular chart based on the magnitude of the time signal and the analog input signal, and a first calculation circuit 29 that calculates the recording position on the circular chart based on the magnitude of the time signal and the analog input signal. Changeover switches 31 and 32 are driven in conjunction with a second calculation circuit 30 that calculates the recording position on the strip chart based on the size.
By using a recorder configured to allow selection, it is possible to realize a recorder that can use either a circular chart or a strip chart.

<Effects of the Invention> As described above, according to the present invention, it is possible to realize a recorder that solves the inconveniences caused by a recording pen that writes yen% and the inconveniences caused by using a circular chart.

[Brief explanation of the drawing]

FIG. 1 is a configuration block diagram showing one embodiment of the present invention, and FIG.
1 is an external view showing the specific example of FIG. 1, FIG. 3 is an explanatory diagram of the recording operation of FIG. 1, and FIGS. 4, 5, and 13 are main parts of other embodiments of the present invention. Block diagram showing 6th
7 and 7 are explanatory diagrams of other recording operations, respectively.
The figure is an external view showing another embodiment of the present invention, FIG. 9 is an explanatory diagram of the storage state of a circular chart, FIG. FIG. 12 is an explanatory diagram showing an example of a recording operation on a strip chart, and FIG. 14 is an external view showing an example of a conventional recorder. 3...Circular chart, 4...X-axis arm, 5...
Y-axis arm, 6... recording element, 7... carriage,
8...X-axis drive sIM, 9...Y-axis drive mechanism, 10
... analog input signal input terminal, 11 ... measurement circuit, 12 ... recording position calculation circuit, 13 ... time signal input terminal, 14. . . . Recording control circuit, 17 . . . Adjustment control calculation section, 18 . . . Setting circuit, ] 9 .
Arithmetic circuit, 30... Second arithmetic circuit, 31.32...
Changeover switch. Section 3 Figure Figure Figure Figure 1O Figure Figure

Claims (5)

[Claims] (1) A chart, a carriage moving means for moving a carriage to which a recording head is attached in at least the X direction or the Y direction on the chart, and recording for calculating a recording position on the chart based on at least the magnitude of an analog input signal. a position calculation means; when not recording, the carriage is stopped at a rest position outside the recording area of the chart; during recording, the carriage is moved to a predetermined recording position calculated by the recording position calculation means; and the recording head is selectively driven. 1. A recorder comprising a recording control means for causing recording to be performed. (2) A circular chart with a time scale along the circumference is used as the chart, a means for moving the carriage in the X and Y directions is used as the carriage moving means, and a time signal and an analog input signal are used as the recording position calculation means. 2. The recorder according to claim 1, wherein the recorder calculates the recording position on the circular chart based on the size of the recorder. (3) A strip chart with a time scale provided along the feeding direction is used as the chart, a means for moving the carriage in the X and Y directions is used as the carriage moving means, and a recording position calculating means is used to calculate the time signal and analog input signal. 2. The recorder according to claim 1, further comprising a device that calculates the recording position on the strip chart based on the size. (4) A strip chart with a time scale along the feeding direction is used as the chart, a carriage moving device that moves the carriage in a direction perpendicular to the feeding direction of the strip chart is used, and an analog input is used as the recording position calculation device. 2. The recorder according to claim 1, further comprising a device that calculates the recording position on the strip chart based on the magnitude of the signal. (5) As recording position calculation means, first calculation means calculates the recording position on the circular chart based on the magnitude of the time signal and the analog input signal; 2. The recorder according to claim 1, wherein the recorder is configured such that the second calculation means for calculating the recording position can be selected.